In the episode that aired Jan. 23, Pearson’s home catches fire when a faulty slow-cooker is left plugged in overnight. Viewers were left with the impression that Pearson (Milo Ventimiglia) died in the fire, but in Sunday’s episode, which followed Super Bowl LII, he walked away from the blaze. Pearson appeared to be all right, but when he checks into a hospital because of smoke inhalation and second-degree burns on his hands, he dies of a heart attack, CNN reported.

Fans of the show flocked to Twitter to express their sadness at losing Pearson.

“It’s 5 a.m. and I’m ugly crying because of this show,” one fan tweeted.

“Everybody deserves to be loved by a Jack Pearson,” tweeted another.

“Who needs dumb boys to break your heart when you can watch #ThisIsUs.” tweeted a third person.

A Twitter spokesman said this week’s show received the most tweets since the series debuted, CNN reported.

When you survive the entire episode about Jack dying, but break down during the last scene between grown Tess & Randall 😭😭😭😭 #ThisIsUs

Just so everyone knows it....#JackPearson lives in all of our hearts. He’s you. He’s me. He’s Us. Thank you all for supporting our show. We love you all :) And this isn’t the end of Jack. Stay tuned. #ThisIsUs. MV

#ThisIsUs is so incredibly written it’s crazy. Like they have one scene and you thinks it means nothing and it comes back 10 episodes later and you finally understand it and it’s makes you cry unexpectedly.